Sun, I don't think answerer has the obligation to responds the offerer with the same answer as previous one.In session refresh, this sort of scenario occurs frequently.The answerer might take the chance to do call hold, MoH etc. Similar talk at https://lists.cs.columbia.edu/pipermail/sip-implementors/2008-September/020300.html -Rockson________________________________ From: sipping-bounces@xxxxxxxx [mailto:sipping-bounces@xxxxxxxx] On Behalf Of 孙永光Sent: Wednesday, August 19, 2009 3:29 PMTo: IETF Sipping List; sip-implementors@xxxxxxxxxxxxxxxxxxxxx; discussion@xxxxxxxxxxxxxxxxxxx: how to response the offer Dear All I have a question about How to respond the offer , the scenario is as following A call B , and the offer and answer is ok , after a while , A receives a B 's REINVITE which includes the same SDP as it just answered before now, How does A respond it ? does A must respond the B's new offer with the same SDP as the offer it sent previously? could you give some advice ? Thanks SunYongGuang -- msn:yongguangsun@xxxxxxxxxxx <mailto:msn%3Ayongguangsun@xxxxxxxxxxx> _______________________________________________Sipping mailing list https://www.ietf.org/mailman/listinfo/sippingThis list is for NEW development of the application of SIPUse sip-implementors@xxxxxxxxxxxxxxx for questions on current sipUse sip@xxxxxxxx for new developments of core SIP
